AC/Heatpump control



  • Hi.
    I've just moved from Domoticz to MC, and so far I'm a happy chappy :)

    On domo I was controlling my heatpump/AC unit using Toni's setup, slightly altered to allow for my Panasonic inverter.
    I used his LUA script to calculate the needed codes to send to the AC.

    Now I'm trying to make the thing work on MC...

    I can send fixed commands, using the RAW feature, but I'm stuck trying to figure out a smart way of doing it on MC.

    Somehow I need to make the state of "Heatpump Mode (including ON/OFF)", "Fan Speed" and "Temperature Setting" work together to generate an eight digit code that will be send to the AC node when one of the parameters update.

    Any pointers (or solutions ;) )

    Thanks :D


  • ADMIN

    @ksga Thanks to showing interest with MyController. Can you post your program logic? We can create JavaScript and execute your logic :)



  • Sure @jkandasa
    The LUA script that Toni wrote looks like this:

    -- These are the configuration variables, set them according to your system
    modelCmd = '0'        -- Panasonic CKP, see https://github.com/mysensors/Arduino/blob/development/libraries/MySensors/examples/HeatpumpIRController/HeatpumpIRController.ino#L68
    textDev = 'IR data'   -- Name of the 'IR data' MySensors device
    irSendDev = 'IR send' -- Name of the 'IR send' MySensors device
    
    
    commandArray = {}
    
    
    for key, value in pairs(devicechanged) do
      if (key == 'Heatpump Mode' or key == 'Heatpump Fan Speed' or key == 'Heatpump Temperature') then
    
        mode = otherdevices['Heatpump Mode']
        fanSpeed = otherdevices['Heatpump Fan Speed']
        temperature = math.floor(otherdevices_svalues['Heatpump Temperature'])
    
        if     (mode == 'Off')   then powerModeCmd = '00'
        elseif (mode == 'Auto')  then powerModeCmd = '11'
        elseif (mode == 'Heat')  then powerModeCmd = '12'
        elseif (mode == 'Cool')  then powerModeCmd = '13'
        elseif (mode == 'Dry')   then powerModeCmd = '14'
        elseif (mode == 'Fan')   then powerModeCmd = '15'
        elseif (mode == 'Maint') then powerModeCmd = '16'
        end
    
        if     (fanSpeed == 'Auto')  then fanSpeedCmd = '0'
        elseif (fanSpeed == 'Fan 1') then fanSpeedCmd = '1'
        elseif (fanSpeed == 'Fan 2') then fanSpeedCmd = '2'
        elseif (fanSpeed == 'Fan 3') then fanSpeedCmd = '3'
        elseif (fanSpeed == 'Fan 4') then fanSpeedCmd = '4'
        elseif (fanSpeed == 'Fan 5') then fanSpeedCmd = '5'
        end
    
        temperatureCmd = string.format("%02x", temperature)
    
        modeCmd = '00' .. modelCmd .. powerModeCmd .. fanSpeedCmd .. temperatureCmd
    
        print(string.format('Mode: %s, fan: %s, temp: %s, modeCmd: %s', mode, fanSpeed, temperature, modeCmd))
    
        commandArray['UpdateDevice'] = otherdevices_idx[textDev] .. '|0|' .. modeCmd
        commandArray['IR send'] = 'On'
    
      end
    end
    
    return commandArray
    

    The code will generate an eight digit code looking something like this:
    12345678
    Position 1+2: Always "00", double zero
    Position 3: Model code - in my case "4" - refers to Arduino sketch
    Position 4+5: Power mode - for example "11" - Auto mode
    Position 6: Fan speed - for example "3" - speed 3
    Position 7+8: Temperature in hex - for example "18" - 24 degrees

    Above would result in the string: 00411318 - Auto mode, Fan speed 3, 24 degrees :)

    The mode, fanSpeed and temperature variables defined in the first section refers to the dummy devices that were needed on Domoticz



  • Hi @jkandasa
    I don't want to put any pressure on you or anything like that - I'm very grateful for all your hard work that has gone into this project - which ROCKS btw :)

    But - was my above info useful, or was it insufficient to explain the issue?


  • ADMIN

    @ksga Sorry for the delay response,

    JavaScript code for the above LUA script,

    //Get sensor values with UID Tags
    var mode =  mcApi.uidTag().getByUid("hp-mode").getResource().getValue(); //Heatpump Mode
    var fanSpeed = mcApi.uidTag().getByUid("hp-fs").getResource().getValue(); //Heatpump Fan Speed
    var temperature = parseInt(mcApi.uidTag().getByUid("hp-temperature").getResource().getValue()).toFixed(0); //Heatpump Temperature
    
    var modelCmd = '0'; //Default
    var powerModeCmd = "00"; //Default value
    var fanSpeedCmd = "0"; //Default value
    
    //Update mode
    if (mode == 'off'){
      powerModeCmd = '00';
    }else if (mode == 'Auto'){
      powerModeCmd = '11';
    }else if (mode == 'Heat'){
      powerModeCmd = '12';
    }else if (mode == 'Cool'){
      powerModeCmd = '13';
    }else if (mode == 'Dry'){
      powerModeCmd = '14';
    }else if (mode == 'Fan'){
      powerModeCmd = '15';
    }else if (mode == 'Maint'){
      powerModeCmd = '16';
    }
    
    //Update Fan speed
    if (fanSpeed == 'Auto'){
      fanSpeedCmd = '0';
    }else if (fanSpeed == 'Fan 1'){
      fanSpeedCmd = '1';
    }else if (fanSpeed == 'Fan 2'){
      fanSpeedCmd = '2';
    }else if (fanSpeed == 'Fan 3'){
      fanSpeedCmd = '3';
    }else if (fanSpeed == 'Fan 4'){
      fanSpeedCmd = '4';
    }else if (fanSpeed == 'Fan 5'){
      fanSpeedCmd = '5';
    }
    
    var temperatureCmd = parseInt(temperature).toString(16).toUpperCase();
    if(temperatureCmd.length < 2) {
      temperatureCmd = '0' + temperatureCmd;
    }
    
    var modeCmd = '00'+modelCmd+powerModeCmd+fanSpeedCmd+temperatureCmd;
    
    // send to your IR
    // Get IR sensor via UID-Tag
    var irSensor = mcApi.uidTag().getByUid("my-ir-sen").getResource();
    // Update value
    irSensor.value = modeCmd;
    // Send value to sensor
    mcApi.sensor().sendPayload(irSensor);
    
    

    You have to set UID Tag for each sensor and get sensor value with UID Tag. There is no event mechanism in MC right now. You have to configure a timer job to run this operation.



  • No worries @jkandasa
    I'm trying to create the needed sensors. I assume I'll have to create some additional "dummy" sensors on the AC node.
    Is it possible to create a custom "Multi selector" sensor?
    The existing HVAC ones doesn't quite match the settings on my unit.

    Regarding the script itself - would it not need some logic to prevent it from sending the value if nothing has changed?
    I added the script on the "Utilities > Scripts tab" - created an "Execute Script" operation on the "Resources > Operations" tab, and finally a simple timer, running every 15 seconds, operating the "operation".

    If the script doesn't check for changes and stop if none has happened, I suspect that I will hear a most annoying beep from the heatpump four times every minute :)
    I won't mind, but I'm sure I will shortly be single again....

    UPDATE
    It works as I feared ;)
    Tried just doing "Text" sensors for holding the variables, and the code picks them up (except for fan speed), and sends them to the heatpump faithfully every time the script runs...
    Mildly annoying :D

    Also, I think I should change from "simple" to "cron" for the timer. However it won't accept my cron entry "*/4 * * * * *" trying to make it run every 15 seconds...


  • ADMIN

    @ksga

    Is it possible to create a custom "Multi selector" sensor?

    Right now it is impossible in MyController.

    Regarding the script itself - would it not need some logic to prevent it from sending the value if nothing has changed?

    you can check timestamp or previousValue of a sensor variable.

    timestamp >> would be a great one, you can make a condition with reference timestamp, if any one of sensorVariable timestamp changed, you can trigger further operation.
    previousValue >> compare value with previousValue, may not be a perfect solution! Might be changed multiple times within few seconds with the same value. Which leads false indication.

    I vote for timestamp solution, Here is simple check based on timestamp, For this you have to create new variable on Variable repository to take last execution time as a reference time. Create variable hp-lastcheck on Utilities >> Variables repository, add 0 as Value(default value, to avoid script null failure).

    //Get last check from variable repository
    var lastCheckVariable = mcApi.variable().get("hp-lastcheck");
    var lastCheck = lastCheckVariable.value;
    
    //Get sensor values with UID Tags
    var modeSensor =  mcApi.uidTag().getByUid("hp-mode").getResource(); //Heatpump Mode, sensor
    var fanSpeedSensor = mcApi.uidTag().getByUid("hp-fs").getResource(); //Heatpump Fan Speed, sensor
    var temperatureSensor = mcApi.uidTag().getByUid("hp-temperature").getResource(); //Heatpump Temperature, sensor
    
    // Take refrance of current time, to update last check
    var currentTime = Date.now();
    
    if(modeSensor.timestamp >= lastCheck || fanSpeedSensor.timestamp >= lastCheck || temperatureSensor.timestamp >= lastCheck){
      // Update values
      var mode =  modeSensor.getValue(); //Heatpump Mode
      var fanSpeed = fanSpeedSensor.getValue(); //Heatpump Fan Speed
      var temperature = parseInt(temperatureSensor.getValue()).toFixed(0); //Heatpump Temperature
    
      var modelCmd = '0'; //Default
      var powerModeCmd = "00"; //Default value
      var fanSpeedCmd = "0"; //Default value
    
      //Update mode
      if (mode == 'off'){
        powerModeCmd = '00';
      }else if (mode == 'Auto'){
        powerModeCmd = '11';
      }else if (mode == 'Heat'){
        powerModeCmd = '12';
      }else if (mode == 'Cool'){
        powerModeCmd = '13';
      }else if (mode == 'Dry'){
        powerModeCmd = '14';
      }else if (mode == 'Fan'){
        powerModeCmd = '15';
      }else if (mode == 'Maint'){
        powerModeCmd = '16';
      }
    
      //Update Fan speed
      if (fanSpeed == 'Auto'){
        fanSpeedCmd = '0';
      }else if (fanSpeed == 'Fan 1'){
        fanSpeedCmd = '1';
      }else if (fanSpeed == 'Fan 2'){
        fanSpeedCmd = '2';
      }else if (fanSpeed == 'Fan 3'){
        fanSpeedCmd = '3';
      }else if (fanSpeed == 'Fan 4'){
        fanSpeedCmd = '4';
      }else if (fanSpeed == 'Fan 5'){
        fanSpeedCmd = '5';
      }
    
      var temperatureCmd = parseInt(temperature).toString(16).toUpperCase();
      if(temperatureCmd.length < 2) {
        temperatureCmd = '0' + temperatureCmd;
      }
    
      var modeCmd = '00'+modelCmd+powerModeCmd+fanSpeedCmd+temperatureCmd;
    
      // send to your IR
      // Get IR sensor via UID-Tag
      var irSensor = mcApi.uidTag().getByUid("my-ir-sen").getResource();
      // Update value
      irSensor.value = modeCmd;
      // Send value to sensor
      mcApi.sensor().sendPayload(irSensor);
    }
    
    //Update lastCheck refrence
    lastCheckVariable.value = currentTime;
    mcApi.variable().update(lastCheckVariable);
    

    I think I should change from "simple" to "cron" for the timer. However it won't accept my cron entry "*/4 * * * * *" trying to make it run every 15 seconds...

    In MyController cron is based on Quartz Scheduler. You should have at least one ? in your cron. Kindly refer this tutorial.
    For 15 seconds: 0/15 * * * * ?



  • @jkandasa
    Thanks.. Will give it a go..

    Is it also correct that the //Update Fan Speed should use
    if (fanSpeed == 'Auto')

    and not:
    if (mode == 'Auto')
    and so on...?


  • ADMIN

    @ksga

    Is it also correct that the
    if (fanSpeed == 'Auto')
    and not:
    if (mode == 'Auto')
    and so on...?

    I am sorry it is a problem of copy/paste ;) I have updated the script.


  • ADMIN

    @ksga Does this script works as you expected?



  • Hi @jkandasa
    Sorry for not posting the feedback yet...

    But yes - It works like a charm. And the timestamp solution seems to do what its supposed to :D


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